How big is the web? Hint – Google has 1,000,000,000,000 URLs

The first Google index in 1998 already had 26 million pages, and by 2000 the Google index reached the one billion mark. Google blog has just posted that now in 2008 they have crawled 1 trillion (1,000,000,000,000) unique URLS with several billion pages being added each day.